Everyone is familiar with cooling fans, and they often use them in daily life. However, most users have a little knowledge of the technical indicators of cooling fans, and they don’t pay much attention when buying cooling fans. How can the cooling effect of the cooling fan be seen from the index?

   1. Air volume

　Air volume refers to the total volume of air discharged or taken in by the cooling fan every minute. The air volume is the most important indicator to measure the heat dissipation capacity of the cooling fan. Generally speaking, the greater the air volume, the higher the heat dissipation capacity.

  2. Wind pressure

　Wind pressure refers to the pressure that the cooling fan receives when it is running. Air pressure and air volume are two relative concepts. Generally, if the air volume of the cooling fan is large, the air pressure is small. On the contrary, if the air volume of the cooling fan is small, the air pressure is large.

  3. Vibration

  When the cooling fan rotor rotates, the physical center of mass of the rotor and the center of inertia of the rotating shaft are not on the same axis, which will cause the rotor to be unbalanced. When the rotor rotates, the centrifugal force generates a force on the shaft support to form vibration, and the vibration is transmitted to all parts of the machine through the base path.